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  • 2005-2009  (95)
  • 1950-1954  (42)
  • 1
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    Spatial and temporal distribution of reef fish spawning aggregations in the Seychelles – an interview-based survey of artisanal fishers (2006)
    WIOMSA
    Details
    Publication Date: 2021-05-19
    Description: Many coral reef fish species aggregate at specific times and locations for the purpose of spawning. This study examined the spatial and temporal distribution of spawning aggregations in the Seychelles. An interview-based survey of the principal stakeholders, mainly artisanal fishers, yielded 89 reports of aggregation fishing for 26 demersal and semi-pelagic fish species. Grouper aggregations were largely concentrated in the outer coralline islands of the exclusive economic zone, whilst those of snappers and rabbitfishes were mainly reported from locations on the Seychelles Bank. The spatial patterns among fish families were attributed to a combination of differences in species abundance and distribution as well as variation in fishing effort. Spawning periodicity reported by fishers indicated that for snappers and rabbitfishes, the most activity occurred across a protracted period of October to April/May, with peaks in activity at either end of that period. Grouper spawning activity was concentrated in the northeast monsoon months of November to January. The findings of this study suggest that several spawning aggregations are targeted by fishers on a regular basis, a practice that constitutes a primary issue for artisanal fisheries research and management in the Seychelles.
    Description: Published
    Description: Spatial distrubution; spawning aggregations, Temporal distribution
    Keywords: Coral reefs ; Reef fish ; Spawning
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
    Format: 2748952 bytes
    Format: application/pdf
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  • 2
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    Seychelles Artisanal Fisheries Statistics for 2004 (2006)
    Victoria : Seychelles Fishing Authority
    Details
    Publication Date: 2021-05-19
    Description: SFA/R&D/061
    Description: Published
    Keywords: Catch composition ; Statistics ; Artisanal fishing ; Catch composition ; Catch statistics ; Catch/effort ; Landing statistics
    Repository Name: AquaDocs
    Type: Report , Non-Refereed
    Format: 1662701 bytes
    Format: application/pdf
    Format: 102pp.
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  • 3
    Electronic Resource
    Electronic Resource
    Symposium on Analytical Chemistry (1953)
    s.l. : American Chemical Society
    Analytical chemistry 25 (1953), S. 998-998 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60078a630
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Discontinuity in fish assemblages across an elevation gradient in a southern Appalachian watershed, USA (2005)
    Oxford, UK : Munksgaard International Publishers
    Ecology of freshwater fish 14 (2005), S. 0 
    Details
    ISSN: 1600-0633
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract –  We examine patterns in fish species assemblages in the Toxaway and Horsepasture rivers, two high elevation streams in North Carolina, USA. This region is noted for extreme topographical relief, high cumulative annual rainfall and many rare and endemic plants and animals. The study area encompasses a portion of the Blue Ridge Escarpment and the associated Brevard Fault Zone. We hypothesise that major waterfalls and cascade complexes have acted to limit invasion and colonisation by fishes from downstream. This hypothesis is supported by longitudinal fish assemblage patterns in our study streams. Fish species richness in Toxaway River increased from 4 to 23 between Lake Toxaway and Lake Jocassee, a distance of 10 river km. We found similar discontinuities in neighbouring Horsepasture River and Bearwallow Creek. We found no instances of species replacement along this elevation gradient, and the trend in increased diversity downstream showed discontinuities coincident with sharp elevation breaks. With regard to theories posited to explain community formation in headwater stream fish communities (especially in those characterised by high topographical relief), we suggest coloniser ‘access’ may be more important than other factors including competitive interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0633.2005.00063.x
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  • 5
    Electronic Resource
    Electronic Resource
    Nuchal Crests in Australopithecines (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 1197-1198 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This evidence is most clearly seen in the Swartkrans skull SKA9, the occipital region of which has now been prepared in acetic acid. The skull has been sheared considerably, but the region from slightly posterior to the glabella to approximately the position of the bregma, as well as a good deal of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1741197a0
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  • 6
    Electronic Resource
    Electronic Resource
    The Australopithecine Occiput (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 262-263 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a recently published essay1, Prof. S. Zuckerman has discussed at some length the evolutionary position of the australopithecines under the three headings of evidence relating to: (1) the brain, (2) the face and teeth, and (3) upright posture. The first two sections are dismissed after very brief ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/174262a0
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  • 7
    Electronic Resource
    Electronic Resource
    Aspartate–Glutamate Transaminase in a Red Halophilic Bacterium (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 672-673 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Cells of P. salinaria were harvested from a three-day culture grown on the medium devised [by Katznelson and Lochhead2 but modified to contain glycerol as the carbohydrate addition. Cells were washed once with 0 -025 M phosphate buffer, pH. 8 -0, containing 15 per cent sodium chloride. Since intact ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/172672a0
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  • 8
    Electronic Resource
    Electronic Resource
    Eruption of the Permanent Teeth in the South African Fossil Ape-men (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 443-443 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A. H. Schultz has recently shown1 that in all manlike apes and in the majority of monkeys the sequence of eruption is very definite (brackets show variation): M19 A, J2, M2, (P, P), (Ms, C). The premolars are variable, and M3 and C may vary in order. But the 2nd molar is always the fourth tooth ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167443a0
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of Anions on the Respiration of Kidney Slices from Adult Rats (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 730-731 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Thus, an isotonic solution corresponding to the "Medium A.2" (rf. 3) was prepared by mixing 0*154 M sodium nitrate, 232 ml., 0-154 M potassium nitrate, 8 ml., 0-11 M calcium nitrate, 3 ml., and 0-1542" magnesium sulphate, 2 ml., and adding 24 ml. of phosphate buffer prepared by bringing M/15 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/165730b0
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  • 10
    Electronic Resource
    Electronic Resource
    Total Concentration of Fixed Base in Cells of the Renal Cortex of the Rat (1952)
    [s.l.] : Nature Publishing Group
    Nature 169 (1952), S. 713-714 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The total concentration of base in the water in the cells was calculated on the assumption that 26 per cent of the weight of the slices consisted of extracellular fluid having the same ionic composition as the external medium. The accompanying table shows these figures, and also, for comparison, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/169713a0
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